Wireless range: 10 meters 1Wireless range may vary due to environmental and computing conditions.
10-Key Number pad
Up to 5 million keystrokes (excludes number lock key)
Key type: Deep-profile
Spill-resistant 2Tested under limited conditions (maximum of 60 ml liquid spillage). Do not immerse the keyboard in liquid.
2 AAA batteries (Alkaline Batteries)
Sensor Technology: Smooth Optical Tracking
Number of Buttons: 3 (Left/Right-click, Middle click)
Scroll Wheel: Yes, optical
2 AA batteries (Alkaline batteries)